#ifndef SPHERE_H
#define SPHERE_H

#include "shape.h"

// Sphere Declarations
class Sphere : public Shape {
public:
    // Sphere Public Methods
    Sphere(const Transform *o2w, const Transform *w2o, bool ro, float rad,
           float zmin, float zmax, float phiMax);
    BBox ObjectBound() const;
    bool Intersect(const Ray &ray, float *tHit, float *rayEpsilon,
                   DifferentialGeometry *dg) const;
    bool IntersectP(const Ray &ray) const;
    float Area() const;
//    Point Sample(float u1, float u2, Normal *ns) const;
//    Point Sample(const Point &p, float u1, float u2, Normal *ns) const;
//    float Pdf(const Point &p, const Vector &wi) const;
private:
    // Sphere Private Data
    float radius;
    float phiMax;
    float zmin, zmax;
    float thetaMin, thetaMax;
};


Sphere *CreateSphereShape(const Transform *o2w, const Transform *w2o,
        bool reverseOrientation /*, const ParamSet &params */);

#endif // SPHERE_H
